Spicy Kimchi

A traditional Korean napa cabbage kimchi (baechu kimchi) that ferments at room temperature for two days, developing its signature funk and tang. The combination of cabbage and daikon gives the jar two textures: tender, flexible leaves alongside crisp, peppery radish bites that hold their crunch even after fermentation.

Anchovies are doing the umami work here in place of the more common fish sauce. The whole fillets break down during fermentation and contribute a deep marine savoriness that ties the whole batch together. Their oil drizzled over the vegetables also helps the chile flakes coat every leaf evenly.

The four tablespoons of red pepper flakes plus the cayenne creates real heat, distinguishing this from a milder white kimchi. If you want the bright red color of traditional Korean kimchi, look for gochugaru (Korean chile flakes) specifically. They give the same heat with more fragrant, fruity character than standard crushed red pepper.

Kitchen Tips

• Salt the cabbage and let it sit for an hour before mixing. Drawing out the water keeps the kimchi from going soggy as it ferments.
• Use a glass or ceramic vessel, never metal. The acid produced during fermentation reacts with reactive metals and can taint the flavor.
• Press the kimchi down firmly under its own brine. Vegetables exposed to air can grow mold, while submerged ferment cleanly.
• After two days at room temp, transfer to the fridge. The cold slows fermentation to a crawl and the kimchi continues developing flavor over weeks.

Variations

• Add a teaspoon of grated fresh ginger to the spice mix for a brighter, slightly sweet heat.
• Stir in a tablespoon of fish sauce along with the anchovies for an even deeper umami profile.
• Include a julienned Asian pear or apple in the mix. Fruit sugars give the fermentation a head start and add a subtle sweetness.